content/tourdeflex/spark/controls/RadioButtonExample.mxml

<?xml version="1.0" encoding="utf-8"?>
<!--

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  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
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      http://www.apache.org/licenses/LICENSE-2.0

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  distributed under the License is distributed on an "AS IS" BASIS,
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<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
			   xmlns:s="library://ns.adobe.com/flex/spark" 
			   xmlns:mx="library://ns.adobe.com/flex/mx">

	<fx:Script>
		<![CDATA[
			protected function scoreClickHandler(event:MouseEvent):void
			{
				var score:Number = 0.0;
				
				if (group1.selectedValue=="True")
					score=33.34;
				if (group2.selectedValue=="South Africa")
					score=score+33.34;
				if (group3.selectedValue=="False")
					score=score+33.34;
				scoreText.text = "You scored " + numberFormatter.format(score).toString()+"%";
			}
		]]>
	</fx:Script>
	<fx:Declarations>
		<s:RadioButtonGroup id="group1"/>
		<s:RadioButtonGroup id="group2"/>
		<s:RadioButtonGroup id="group3"/>
		<mx:NumberFormatter id="numberFormatter"
							precision="0"
							rounding="nearest"/>
	</fx:Declarations>
	<fx:Style>
		@namespace "library://ns.adobe.com/flex/spark";
		
		RadioButton{ 
			baseColor: #FFFFFF; 
		}
		
	</fx:Style>
	
	<s:Panel title="RadioButton Sample" width="100%" height="100%">
		
		<s:layout>
			<s:VerticalLayout paddingLeft="10" paddingRight="10" paddingTop="10" paddingBottom="10"/>
		</s:layout>
		
		<s:HGroup>
			<s:VGroup>
				<s:Label text="1) The sky is blue:"/>
				<s:RadioButton id="trueRadioBtn" label="True" groupName="group1"/>
				<s:RadioButton id="falseRadioBtn" label="False" groupName="group1"/>
			</s:VGroup>	
			<s:VGroup paddingLeft="20">
				<s:Label text="2) Which of the following is not a continent?"/>
				<s:RadioButton id="multiRadioBtnA" label="North America" groupName="group2"/>
				<s:RadioButton id="multiRadioBtnB" label="Europe" groupName="group2"/>
				<s:RadioButton id="multiRadioBtnC" label="Asia" groupName="group2"/>
				<s:RadioButton id="multiRadioBtnD" label="South Africa" groupName="group2"/>
			</s:VGroup>
			<s:VGroup paddingLeft="20">
				<s:Label text="3) Tallahasee is the capital of Alabama:"/>
				<s:RadioButton id="trueRadioBtn3" label="True" groupName="group3" />
				<s:RadioButton id="falseRadioBtn3" label="False" groupName="group3"/>
			</s:VGroup>
			<s:VGroup horizontalAlign="contentJustify">
				<s:Button id="scoreBtn" label="Score Me!" click="scoreClickHandler(event)"/>
				<s:Label id="scoreText"/>
			</s:VGroup>
		</s:HGroup>
		
		<s:Label width="100%" verticalAlign="justify"
				 text="The RadioButton control is a single choice in a set of mutually 
exclusive choices. A RadioButton group is composed of two or more RadioButton controls with
the same group name. Only one member of the group can be selected at any given time." />
	</s:Panel>
	
		
</s:Application>